EP0955719A2 - Convertisseur élevateur de tension et sa méthode d'opération - Google Patents

Convertisseur élevateur de tension et sa méthode d'opération Download PDF

Info

Publication number
EP0955719A2
EP0955719A2 EP99303284A EP99303284A EP0955719A2 EP 0955719 A2 EP0955719 A2 EP 0955719A2 EP 99303284 A EP99303284 A EP 99303284A EP 99303284 A EP99303284 A EP 99303284A EP 0955719 A2 EP0955719 A2 EP 0955719A2
Authority
EP
European Patent Office
Prior art keywords
boost
coupled
converter
output
output voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99303284A
Other languages
German (de)
English (en)
Other versions
EP0955719A3 (fr
Inventor
Yimin Jiang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia of America Corp
Original Assignee
Lucent Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of EP0955719A2 publication Critical patent/EP0955719A2/fr
Publication of EP0955719A3 publication Critical patent/EP0955719A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4216—Arrangements for improving power factor of AC input operating from a three-phase input voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • the present invention is directed, in general, to power conversion and, more specifically, to a three-phase boost converter having a reduced output voltage and a method of operating the same.
  • Regulated DC power supplies are typically needed for most analog and digital electronic systems.
  • Two major categories of regulated DC power supplies are linear power supplies and switching power supplies.
  • a transistor operating in its active region
  • a transformer e.g., a 60-Hz transformer.
  • DC/DC converter circuits such as a step-down (buck) or step-up (boost) circuit.
  • Solid-state devices such as transistors, are operated as switches (either completely ON or completely OFF) within these switching converters. Since the power devices are not required to operate in their active region, this mode of operation results in lower power dissipation. Furthermore, increasing switching speeds, higher voltage and current ratings of these power devices are some of the factors that have increased the popularity of switching power supplies.
  • the simplest switching power converter topology is a single switch discontinuous current mode (DCM) boost converter.
  • DCM discontinuous current mode
  • the boost converter's three input inductors in DCM at the beginning of each switching cycle when the boost switch is ON, currents through the input inductors begin to ramp up from an initial value of zero at a rate that is proportional to the input inductors corresponding phase to neutral voltage. Consequently, the input inductor currents, which are also the phase currents, are naturally proportional to their corresponding phase voltages during the period when the boost switch is ON.
  • M Vout/Vin(rms)
  • This high output voltage requirement for a low THD normally results in an output voltage that is higher than what is generally desired.
  • the output voltage would be required to be about 650 V to realize THDs of less than 10%.
  • This 650 V output voltage is much higher than a 440 V output that is normally desired.
  • the required output voltage would then have to be as high as 1300 V (far above a conventional 800 V output) to achieve THDs of less than 10%.
  • the present invention provides, for use with a boost converter having a three phase rectifier, a boost switch coupled across the rectifier and a boost diode, operable in discontinuous mode, coupled between the rectifier and an output of the boost converter, a circuit for, and method of, providing a reduced output voltage from the boost converter.
  • the circuit includes an autotransformer, coupled across the output, that has an intermediate tap for providing the reduced output voltage.
  • the present invention therefore introduces the broad concept of employing an autotransformer to reduce a boost converter's output voltage.
  • the present invention discloses a novel circuit that takes advantage of the low THD inherent in a boost converter with high M, e.g., M > 1.7.
  • the present invention introduces a circuit at the output stage of the boost converter that provides an output voltage that is at a desired lower value while still enjoying the low THD provided by the boost operation.
  • the circuit further includes an output capacitor, coupled to the intermediate tap, that attenuates a DC component in the reduced output voltage.
  • an output capacitor coupled to the intermediate tap, that attenuates a DC component in the reduced output voltage.
  • the intermediate tap is a center tap of the autotransformer.
  • the intermediate tap may not "bisect" the windings of the autotransformer.
  • the circuit further includes a snubber circuit, coupled to the boost switch, that clamps a voltage overshoot occurring therein.
  • the snubber circuit is a passive snubber circuit.
  • the snubber circuit may be an active snubber circuit. The present invention does not, however, require a snubber circuit.
  • the autotransformer comprises windings having equal numbers of turns.
  • the windings may alternatively differ in numbers of turns.
  • the present invention is not limited to a particular turns-ratio.
  • the circuit further includes a diode series-coupled with the autotransformer across the output.
  • the diode rectifies power through the autotransformer.
  • an active switch can perform the function if it is desired in a particular application.
  • FIGURE 1 illustrated is a schematic diagram of an embodiment of a three phase boost converter 100 constructed according to the principles of the present invention.
  • the boost converter 100 receives input power from a three-phase voltage source 110 through first, second and third boost inductors 120a, 120b, 120c that are coupled to a rectifier 130 comprising a plurality of diodes arrayed in a full bridge configuration.
  • the rectifier 130 rectifies the AC input voltage prior to its delivery to the boost converter's 100 output stage when a boost switch 140 is OFF, i.e., not conducting.
  • the boost switch 140 illustrated with an internal body diode
  • the boost diode 145 becomes reverse biased, thus isolating the output stage.
  • the AC input supplies energy to the first, second and third boost inductors 120a, 120b, 120c.
  • boost inductor currents which are also the phase currents, are naturally proportional to their corresponding phase voltage during the period when the boost switch 140 is ON.
  • M Vout/Vin(rms)
  • This high output voltage requirement for a low THD normally results in an output voltage that is higher than what is generally desired.
  • the output voltage would be required to be about 650 V to realize THDs of less than 10%.
  • This 650 V output voltage is much higher than a 440 V output that is normally desired.
  • the required output voltage would then have to be as high as 1300 V (far above a conventional 800 V output) to achieve THDs of less than 10%.
  • the present invention discloses a novel circuit that takes advantage of the low THD inherent in a boost converter with high M, e.g., M > 1.7.
  • the present invention introduces a circuit at the output stage of the boost converter 100 that provides an output voltage Vout2 that is at a desired lower value while still enjoying the low THD provided by the boost operation.
  • an output circuit 150 is shown coupled to the boost diode 140.
  • the output circuit includes an autotransformer 155 that is coupled to a diode 160.
  • the output voltage Vout2 is derived from an intermediate tap of the autotransformer 155.
  • the intermediate tap is the center tap of the autotransformer. It should be noted that in other advantageous embodiments, the intermediate tap may not "bisect" the windings of the autotransformer.
  • An output capacitor 165 is shown coupled across the intermediate tap of the autotransformer 155 and the diode 160 to attenuate DC components in the output voltage Vout2.
  • the output voltage Vboost is selected to be at a value just slightly higher than the peak value of the input phase-to-phase voltage (which is the minimum possible voltage with any type of boost converter).
  • the boost switch 140 is turned OFF, the output voltage Vboost that is driving the discharge of the first, second and third inductors 120a, 120b, 120c is twice the output voltage Vout2 (assuming negligible voltage drops across the diode 160).
  • the output voltage Vboost, at twice the value of the output voltage Vout2 provides a M > 2 value, preserving the low THD feature of a boost converter with high M values.
  • the operation of the converter 100 is equivalent to the operation of a boost converter with M > 2, the first, second and third inductors' 120a, 120b, 120c charging periods are always greater than their respective discharging periods (when the autotransformer 155 is in use) that ensures the autotransformer 155 enough reset time during each switching cycle of the boost switch 140.
  • an autotransformer with turns-ratio of 1:1 has been described, in other advantageous embodiments, autotransformers with different turns-ratio may be employed.
  • the operation of the boost converter 100 may be improved with the addition of a snubber to clamp the voltage "overshoot" transients on the boost switch 140, due to leakage inductances of the autotransformer 155, when the boost switch 140 is turned OFF.
  • the snubber reduces the stresses on the boost switch 140 during switching intervals and transients.
  • Specific embodiments of snubber circuits that may be advantageously employed in the converter 100 are illustrated in FIGUREs 2 and 3.
  • the illustrated embodiments of snubber circuits are conventional snubber circuits well known in the art. Hence, their operation will hereinafter not be described in detail.
  • FIGURE 2 illustrated is a schematic diagram of an embodiment of a converter 200 using the principles of the present invention and further employing an active lossless snubber circuit 210.
  • the active lossless snubber circuit 210 includes an auxiliary switch 220 series-coupled with a snubber capacitor 230.
  • FIGURE 3 illustrated is a schematic diagram of an embodiment of a converter 300 using the principles of the present invention and further employing a passive lossless snubber circuit 310.
  • the passive lossless snubber circuit 310 includes a capacitor 320 that is series-coupled with an inductor 340 and a diode 350 across a boost switch 360. Also illustrated in the passive lossless snubber circuit is a diode 330 that is coupled to the output of the converter 300.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)
EP99303284A 1998-05-04 1999-04-27 Convertisseur élevateur de tension et sa méthode d'opération Withdrawn EP0955719A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72390 1998-01-09
US09/072,390 US6046576A (en) 1998-05-04 1998-05-04 Boost converter having reduced output voltage and method of operation thereof

Publications (2)

Publication Number Publication Date
EP0955719A2 true EP0955719A2 (fr) 1999-11-10
EP0955719A3 EP0955719A3 (fr) 2000-07-19

Family

ID=22107251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99303284A Withdrawn EP0955719A3 (fr) 1998-05-04 1999-04-27 Convertisseur élevateur de tension et sa méthode d'opération

Country Status (5)

Country Link
US (1) US6046576A (fr)
EP (1) EP0955719A3 (fr)
JP (1) JP2000060113A (fr)
CN (1) CN1234644A (fr)
CA (1) CA2267723A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100495886C (zh) * 2006-10-26 2009-06-03 南京航空航天大学 高功率因数三相整流器
US8264205B2 (en) * 2008-02-08 2012-09-11 Sion Power Corporation Circuit for charge and/or discharge protection in an energy-storage device
US8929101B2 (en) * 2012-12-17 2015-01-06 Chung-Shan Institute Of Science And Technology DC to DC converting circuit
CN104917295A (zh) * 2015-06-19 2015-09-16 国网天津市电力公司 一种远程模拟控制装置
CA2992456C (fr) 2015-07-17 2024-01-23 Jacob W. Devaal Circuit a tension d'empilement reduite pour le diagnostic d'un systeme d'accumulation d'energie
CN110768546B (zh) * 2019-10-31 2020-08-04 北京建筑大学 一种单相整流器及其控制方法
TWI767851B (zh) * 2021-10-08 2022-06-11 亞源科技股份有限公司 具有被動式無損失緩衝器之多相式升壓轉換裝置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995010877A1 (fr) * 1993-10-11 1995-04-20 Nokia Telecommunications Oy Alimentation a decoupage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255174A (en) * 1991-10-18 1993-10-19 Allied-Signal Inc. Regulated bi-directional DC-to-DC voltage converter which maintains a continuous input current during step-up conversion
US5414613A (en) * 1993-08-20 1995-05-09 Rem Technologies, Incorporated Soft switching active snubber for semiconductor circuit operated in discontinuous conduction mode
JPH08237959A (ja) * 1995-02-28 1996-09-13 S G S Thomson Micro Electron Kk 電源回路

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995010877A1 (fr) * 1993-10-11 1995-04-20 Nokia Telecommunications Oy Alimentation a decoupage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GATARIC S ET AL: "SOFT-SWITCHED SINGLE-SWITCH THREE-PHASE RECTIFIER WITH POWER FACTORCORRECTION" PROCEEDINGS OF THE ANNUAL APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC),US,NEW YORK, IEEE, vol. CONF. 9, 1994, pages 738-744, XP000467388 *

Also Published As

Publication number Publication date
US6046576A (en) 2000-04-04
CN1234644A (zh) 1999-11-10
CA2267723A1 (fr) 1999-11-04
JP2000060113A (ja) 2000-02-25
EP0955719A3 (fr) 2000-07-19

Similar Documents

Publication Publication Date Title
US5508903A (en) Interleaved DC to DC flyback converters with reduced current and voltage stresses
US5663876A (en) Circuit and method for achieving zero ripple current in the output of a converter
US4654769A (en) Transformerless dc-to-dc converters with large conversion ratios
Tsai et al. Off-line flyback converter with input harmonic current correction
JP4077809B2 (ja) Ａｃ／ｄｃフライバック・コンバータ
US6239584B1 (en) Two-inductor boost converter
US5122728A (en) Coupled inductor type dc to dc converter with single magnetic component
US6310785B1 (en) Zero voltage switching DC-DC converter
US6717388B2 (en) Bidirectional converter with input voltage control by a primary switch and output voltage regulation by a secondary switch
US7532489B2 (en) Power factor correction power supply
US8107261B2 (en) Powering unit with full bridge and wide adjusting range circuit
US5894214A (en) Dual-output boost converter having enhanced input operating range
US5883793A (en) Clamp circuit for a power converter and method of operation thereof
US5886891A (en) Three-phase boost converter having wye-connected input capacitors and method of operation thereof
US6169671B1 (en) Snubber circuit for a power switch and recitifying diode and power converter employing the same
Redl et al. Push-pull current-fed multiple-output DC/DC power converter with only one inductor and with 0 to 100% switch duty ratio
US7184287B2 (en) Rectifier clamping circuit with reverse energy recovery
EP1107438A2 (fr) Circuit d'équilibrage pour division de tension entre condensateurs
KR20060055415A (ko) 영전압-영전류 스위칭을 이용한 3 레벨 직류-직류 컨버터
US6567284B2 (en) DC to DC converting incorporating ZVS circuit and synchronized isolation circuit
EP0955719A2 (fr) Convertisseur élevateur de tension et sa méthode d'opération
JPH05336752A (ja) スイッチングレギュレータ
US6252782B1 (en) Switching power supply utilizing magnetically coupled series inductors
US6072709A (en) Multiple output voltage converter with improved cross-regulation
JPH05328714A (ja) Ｄｃ−ｄｃコンバータ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20001214

AKX Designation fees paid

Free format text: DE FR GB

17Q First examination report despatched

Effective date: 20010301

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20010712